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A small wooden box without cover, measuring from the outside, is 10 cm long, 8 cm wide, 5 cm high, and 1 cm thick. How many square centimeters of 1 cm thick wood board is needed to make this wooden box?
As shown in the figure: according to the analysis: the width of the four sides of the board is: 5-1 = 4 (CM), 10 × 8 + 10 × 4 × 2 + (8-1-1) × 4 × 2, = 80 + 80 + 6 × 4 × 2, = 160 + 48, = 208 (square cm); answer: to make this wooden box, at least 1 cm thick board 208 square cm is needed
On the 1:100 plan, a classroom is 8 cm long and 6 cm wide. How many square meters is the teacher's area?
8 × 100 = 800cm = 8M
6 × 100 = 600 cm = 6 m
8 × 6 = 48 square meters
How many centimeters is six inches?
1 inch = 0.0254m
therefore
6in = 0.0254 * 6 = 0.1524m = 15.24cm
How many inches is two feet six
1 foot = 1 / 3M = 100 / 3cm
So two feet six = 2.6 × 100 / 3 = 260 / 3cm
1 inch = 2.54 cm
260 / 3 △ 2.54 = 34.1 in
Who knows how many centimeters is four feet six inches tall?
One foot = 12 inches, four feet six inches = 54 inches,
1 inch = 2.54 cm, 54 (inch) x2.54 (CM) = 137.16 cm
On the polynomial 6mx + 4nxy + 2x + 2xy-x + y + 4 of XY without quadratic term, the value of polynomial 2Mn + 10m-4n + 2-2mn-4m + 2n is obtained
The polynomial of XY is 6mx ^ 2 + 4nxy + 2x + 2xy-x ^ 2 + y + 4 without quadratic term
So 6m-1 = 0, 4N + 2 = 0
So m = 1 / 6, n = - 1 / 2
Original formula = 6m-2n + 2 = 1 + 1 + 2 = 4
I'm glad to answer for you. I hope it can help you,
Is any power of negative 1 negative 1? Is the square of a greater than or equal to 0
The even power of a negative number is a positive number, and the square of a is always greater than or equal to 0
The absolute value of the 2013 power of (- 1) is? If the square of a = a, then a equals () if the cube of a = a,
The absolute value of the 2013 power of (- 1) is? If the square of a = a, then a equals () if the cube of a = a, then a equals ()
The first is 1, (| - 1) ^ 2013 | = | - 1 | = 1)
The second is 0,1 (a-178; = a, a-178; - a = 0, a (A-1) = 0, a = 0 or a = 1)
The third is - 1,0,1 (A & # 179; =, a, a & # 179; - a = 0, a (a + 1) (A-1) = 0, a = 0, - 1, or 1)
I hope my answer can help you,
Given that the product of monomial 0.25x ^ by ^ C and monomial-0.125m ^ m-1y ^ 2N-1 is 0.625ax ^ NY ^ m, find the value of a + B + C + n
b+m-1=n
c+2n-1=m
Add
b+m-1+c+2n-1=n+m
b+c+n=2
Where is a?
Given that the sum of the monomial Formula 1 / 4x ^ b y ^ C and - 1 / 8ax ^ M-1 y ^ n-1 is 5 / 8x ^ N Y ^ m, then the value of ABC is?
And are monomials, so the first two are of the same kind
So x and y have the same degree
And the coefficient is the sum of the two coefficients
So 1 / 4 + (- 1 / 8a) = 5 / 8
a=-3
frequency
b=m-1=n
c=n-1=m
That is, M-1 = n
n-1=m
This doesn't work
So there is no solution
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